Solve for x
x=10
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5\times 4=2x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 5x, the least common multiple of x,5.
20=2x
Multiply 5 and 4 to get 20.
2x=20
Swap sides so that all variable terms are on the left hand side.
x=\frac{20}{2}
Divide both sides by 2.
x=10
Divide 20 by 2 to get 10.
Examples
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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